CN107104241B - Apparatus for manufacturing membrane electrode assembly - Google Patents

Apparatus for manufacturing membrane electrode assembly Download PDF

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Publication number
CN107104241B
CN107104241B CN201710094748.6A CN201710094748A CN107104241B CN 107104241 B CN107104241 B CN 107104241B CN 201710094748 A CN201710094748 A CN 201710094748A CN 107104241 B CN107104241 B CN 107104241B
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roller
electrolyte membrane
support film
base material
manufacturing apparatus
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CN201710094748.6A
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CN107104241A (en
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高木善则
大森雅文
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Screen Holdings Co Ltd
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Screen Holdings Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
    • B32B37/0053—Constructional details of laminating machines comprising rollers; Constructional features of the rollers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B41/00—Arrangements for controlling or monitoring lamination processes; Safety arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/18—Fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/18—Handling of layers or the laminate
    • B32B38/1858—Handling of layers or the laminate using vacuum
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/88—Processes of manufacture
    • H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
    • H01M4/8882—Heat treatment, e.g. drying, baking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention provides a layout capable of ensuring maintenance space and restraining the height dimension of a device in a manufacturing device of a membrane electrode assembly. The manufacturing device (1) of the membrane electrode assembly comprises an adsorption roller (10), a porous base material supply roller (21), a porous base material recovery roller (24), a laminated base material supply roller (31), an assembly recovery roller (65), a coating part (40) arranged around the adsorption roller (10) and a maintenance space (80) for maintaining the coating part (40). The porous base material supply roller (21) and the porous base material recovery roller (24) are disposed on the opposite sides of the maintenance space (80) in the horizontal direction with the adsorption roller (10) therebetween. By arranging the porous base material supply roller (21) and the porous base material recovery roller (24) together on one side of the suction roller (10), a maintenance space (80) can be secured on the opposite side of the suction roller (10). Furthermore, the dimension of the manufacturing device (1) in the height direction can be suppressed.

Description

Apparatus for manufacturing membrane electrode assembly
Technical Field
The present invention relates to a manufacturing apparatus for a membrane electrode assembly in which an electrode layer is formed on the surface of an electrolyte membrane while the electrolyte membrane is conveyed in a long strip shape.
Technical Field
In recent years, fuel cells have attracted attention as a driving power source for automobiles, cellular phones, and the like. The fuel cell is operated by hydrogen (H) contained in the fuel2) And oxygen (O) in the air2) To generate electric energy. The fuel cell has characteristics of high power generation efficiency and small load on the environment as compared with other cells.
There are several types of fuel cells depending on the electrolyte used. One of them is a Polymer Electrolyte Fuel Cell (PEFC) using an ion exchange membrane (Electrolyte membrane) as an Electrolyte. Since a polymer electrolyte fuel cell can operate at room temperature and can be reduced in size and weight, it is expected to be applied to automobiles and portable devices.
A polymer electrolyte fuel cell generally has a structure in which a plurality of cells (cells) are stacked. One cell is configured by sandwiching both sides of a Membrane-Electrode Assembly (MEA) between a pair of separators. The membrane electrode assembly includes an electrolyte membrane and a pair of electrode layers formed on both surfaces of the electrolyte membrane. One of the pair of electrode layers is a positive electrode, and the other is a negative electrode. When the anode electrode contacts a fuel gas containing hydrogen and the cathode electrode contacts air, electric energy is generated through an electrochemical reaction.
Typically, the membrane electrode assembly is produced by applying a catalyst ink (electrode paste) in which catalyst particles containing platinum (Pt) are dispersed in a solvent such as ethanol to the surface of an electrolyte membrane and drying the catalyst ink. A conventional technique for producing a membrane electrode assembly is described in, for example, patent document 1.
Patent document 1: japanese patent laid-open publication No. 2013-161557.
In the manufacturing apparatus of patent document 1, an electrolyte membrane is held on the outer peripheral surface of the suction roller via a porous substrate. Then, the adsorption roller is rotated to eject the catalyst ink from the nozzle while transporting the porous substrate and the electrolyte membrane, thereby applying the catalyst ink to the surface of the electrolyte membrane. In this manufacturing apparatus, a plurality of substrates are carried in and out of the suction roll. Therefore, a plurality of rollers are arranged around the suction roller.
In addition, maintenance such as periodic decomposition cleaning of nozzles and pipes for ejecting the catalyst ink is required. Therefore, not only a plurality of rollers but also a maintenance space must be secured around the suction roller.
Disclosure of Invention
The present invention has been made in view of the above circumstances, and an object thereof is to provide a layout (layout) capable of suppressing the height dimension of the apparatus while ensuring a maintenance space in the apparatus for manufacturing a membrane electrode assembly.
In order to solve the above problems, a first aspect of the present invention is an apparatus for manufacturing a membrane electrode assembly in which an electrode layer is formed on a surface of an electrolyte membrane while the electrolyte membrane is transported in a long strip shape, the apparatus comprising: an adsorption roller which rotates while generating a negative pressure on an outer peripheral surface; a porous base material supply roller configured to supply a long band-shaped porous base material to an outer peripheral surface of the suction roller; a porous substrate recovery roller around which the porous substrate detached from the outer peripheral surface of the suction roller is wound; an electrolyte film supply roller that feeds the electrolyte film to the surface of the porous base material held on the outer peripheral surface of the adsorption roller; an electrolyte membrane collecting roll for winding the electrolyte membrane detached from the surface of the porous substrate; a coating section for coating the surface of the electrolyte membrane with an electrode material around the adsorption roller; and a maintenance space for maintaining the coating section, wherein the porous base material supply roller and the porous base material recovery roller are disposed on horizontally opposite sides of the maintenance space with the suction roller interposed therebetween.
A second aspect of the present invention is the manufacturing apparatus according to the first aspect, wherein the electrolyte membrane supply roller and the maintenance space are disposed on one side of the suction roller in the horizontal direction, and the porous base material supply roller, the porous base material recovery roller, and the electrolyte membrane recovery roller are disposed on the other side of the suction roller in the horizontal direction.
A third aspect of the present invention is the manufacturing apparatus according to the first or second aspect, wherein the electrolyte film supply roller feeds out the electrolyte film having an electrode layer formed on one surface thereof, and the manufacturing apparatus further includes a plurality of carry-in rollers that guide the electrolyte film between the electrolyte film supply roller and the adsorption roller, and wherein the number of carry-in rollers disposed on the one surface side of the electrolyte film is smaller than the number of carry-in rollers disposed on the other surface side of the electrolyte film.
A fourth invention of the present application is the manufacturing apparatus according to any one of the first to third inventions, wherein the maintenance space is located between the electrolyte membrane supply roller and the adsorption roller, and the electrolyte membrane fed out from the electrolyte membrane supply roller passes below the maintenance space.
A fifth aspect of the present invention is the manufacturing apparatus according to any one of the first to fourth aspects, wherein the porous base material supply roller and the porous base material recovery roller are disposed adjacent to each other at the same height.
A sixth aspect of the present invention is the manufacturing apparatus according to any one of the first to fifth aspects, wherein the electrolyte membrane supply roller feeds out a laminated substrate having at least two layers of the electrolyte membrane and a first support film, the manufacturing apparatus further comprises a first support film recovery roller for the first support film peeled from the electrolyte membrane in front of the suction roller, and the electrolyte membrane supply roller and the first support film recovery roller are disposed on the same side in a horizontal direction of the suction roller.
A seventh aspect of the present invention is the manufacturing apparatus according to the sixth aspect, wherein the electrolyte membrane supply roller and the first support membrane recovery roller are disposed adjacent to each other at the same height.
An eighth invention of the present application is the manufacturing apparatus according to any one of the first to seventh inventions, further comprising: a laminating roller that attaches a second support film to the surface of the electrolyte membrane coated with the electrode material; and a second support film supply roller that feeds out the second support film to the laminating roller, and the electrolyte membrane recovery roller and the second support film supply roller are disposed on the same side in the horizontal direction of the adsorption roller.
A ninth invention of the present application is the manufacturing apparatus according to the eighth invention, wherein the electrolyte membrane recovery roller and the second support film supply roller are disposed adjacent to each other at the same height.
A tenth aspect of the present invention is the manufacturing apparatus according to any one of the first to ninth aspects, wherein the electrolyte membrane supply roller and the electrolyte membrane recovery roller are disposed at the same height.
An eleventh aspect of the present invention is the manufacturing apparatus according to any one of the first to tenth aspects, wherein the porous substrate supply roller, the porous substrate recovery roller, the electrolyte membrane supply roller, and the electrolyte membrane recovery roller are all disposed at a position lower than the adsorption roller.
According to the first to eleventh aspects of the present invention, the porous base material supply roller and the porous base material recovery roller are arranged on one side of the suction roller in a concentrated manner, so that a maintenance space can be secured on the opposite side of the suction roller. Further, the dimension of the manufacturing apparatus in the height direction can be further suppressed as compared with the case where the porous base material supply roller, the porous base material recovery roller, and the maintenance space are all disposed on the suction roller side.
In particular, according to the second invention of the present application, the porous substrate supply roller and the porous substrate recovery roller as the driving portions can be separated from the electrolyte membrane before the coating process. Therefore, even if the porous base material supply roller or the porous base material recovery roller generates dust, the adhesion of the dust to the electrolyte membrane before the coating process can be suppressed.
In particular, according to the third aspect of the present invention, the number of times the carry-in roller and the electrode layer already formed on one surface of the electrolyte membrane are carried in can be reduced, and damage to the electrode layer and adhesion of dust can be suppressed.
In particular, according to the fifth aspect of the present invention, the dimension in the height direction of the manufacturing apparatus can be further suppressed as compared with the case where the porous base material supply roller and the porous base material recovery roller are disposed at different heights. In addition, the operation of replacing the substrate is easily performed in each of the porous substrate supply roller and the porous substrate recovery roller.
In particular, according to the seventh aspect of the present invention, the dimension in the height direction of the manufacturing apparatus can be further suppressed as compared with the case where the electrolyte membrane supply roller and the first support membrane recovery roller are arranged at different heights. In addition, the replacement operation of the substrate is easily performed in the electrolyte membrane supply roller and the first support film recovery roller, respectively.
In particular, according to the ninth aspect of the present invention, the dimension of the manufacturing apparatus in the height direction can be further suppressed as compared with the case where the electrolyte membrane collecting roller and the second support film supplying roller are arranged at different heights. In addition, the replacement operation of the substrate is easily performed in the electrolyte membrane recovery roller and the second support film supply roller, respectively.
In particular, according to the tenth aspect of the present invention, the dimension in the height direction of the manufacturing apparatus can be further suppressed as compared with the case where the electrolyte membrane supply roller and the electrolyte membrane recovery roller are arranged at different heights. In addition, the replacement operation of the substrate is easily performed in the electrolyte membrane supply roller and the electrolyte membrane recovery roller, respectively.
In particular, according to the eleventh aspect of the present invention, even if dust is generated in the porous base material supply roller, the porous base material recovery roller, the electrolyte membrane supply roller, and the electrolyte membrane recovery roller which are the driving portions, the dust is less likely to scatter around the adsorption roller.
Drawings
Fig. 1 is a diagram showing the configuration of a manufacturing apparatus for a membrane electrode assembly.
Fig. 2 is an enlarged view showing the vicinity of the lower portion of the suction roller.
Fig. 3 is a block diagram showing connections of the control unit and the respective units.
Fig. 4 is a diagram conceptually showing a layout of a manufacturing apparatus.
Fig. 5 is a diagram conceptually showing the layout of a manufacturing apparatus according to a modification.
Wherein the reference numerals are as follows:
1. 1a manufacturing apparatus
9a first electrode layer
9b second electrode layer
10 adsorption roller
20 porous base material supply and recovery unit
21 porous base material supply roller
22 porous base material carrying-in roller
23 porous substrate carrying-out roll
24 porous base material recovery roll
30 electrolyte membrane supply part
31 laminated base material supply roller
32 laminated base material carrying-in roller
33 peeling roller
34 first support film take-out roller
35 first support film recovery roll
40 coating part
41 spray nozzle
50 drying furnace
60 joined body collecting part
61 second support film supply roller
62 second support film carry-in roller
63 laminating roller
64 delivery roll for joined body
65 conjugant recovery roller
70 control part
80 maintenance space
81 upstream side space
82 downstream side space
89 operator
91 porous base material
92 electrolyte membrane
93 first support film
94 laminated base material
95 Membrane electrode Assembly
96 second support film
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings.
< 1. construction of manufacturing apparatus >
Fig. 1 is a diagram showing the structure of a membrane electrode assembly manufacturing apparatus 1 according to an embodiment of the present invention. The manufacturing apparatus 1 is an apparatus for manufacturing a membrane electrode assembly for a polymer electrolyte fuel cell by forming an electrode layer on the surface of an electrolyte membrane as a long strip-shaped substrate. As shown in fig. 1, the apparatus 1 for manufacturing a membrane electrode assembly according to the present embodiment includes an adsorption roll 10, a porous base material supply and recovery unit 20, an electrolyte membrane supply unit 30, an application unit 40, a drying furnace 50, an assembly recovery unit 60, and a control unit 70.
The suction roller 10 is a roller that rotates the porous substrate 91 and the electrolyte membrane 92 while sucking and holding the porous substrate 91 and the electrolyte membrane 92. The suction roller 10 has a cylindrical outer peripheral surface having a plurality of suction holes. For example, the diameter of the suction roller 10 is set to 200mm to 1600 mm. Fig. 2 is an enlarged view of the vicinity of the lower portion of the suction roller 10. As shown by a broken line in fig. 2, a rotation driving unit 11 having a driving source such as a motor is connected to the suction roller 10. When the rotation driving unit 11 is operated, the suction roller 10 rotates around the axis extending in the horizontal direction.
As a material of the adsorption roller 10, for example, a porous material such as porous carbon or porous ceramic is used. Specific examples of the porous ceramic include alumina (Al)2O3) Or a sintered body of silicon carbide (SiC). The pore diameter of the porous suction roll 10 is, for example, 5 μm or less, and the porosity is, for example, 15% to 50%.
As the material of the suction roller 10, a metal may be used instead of the porous material. Specific examples of the metal include stainless steel such as SUS and iron. When a metal is used as the material of the suction roller 10, minute suction holes may be formed in the outer circumferential surface of the suction roller 10 by machining. In order to prevent the generation of the suction mark, the diameter of the suction hole is preferably 2mm or less.
A suction port 12 is provided in an end surface of the suction roll 10. The suction port 12 is connected to a suction mechanism (for example, an exhaust pump) not shown. When the suction mechanism is operated, a negative pressure is generated in the suction port 12 of the suction roller 10. Further, a negative pressure is also generated in the plurality of suction holes provided in the outer circumferential surface of the suction roller 10 via the air holes in the suction roller 10. While the porous base material 91 and the electrolyte membrane 92 are sucked and held on the outer circumferential surface of the suction roller 10 by the negative pressure, the porous base material 91 and the electrolyte membrane 92 are conveyed in an arc shape by the rotation of the suction roller 10.
As shown by the broken lines in fig. 2, a plurality of water-cooled tubes 13 are provided inside the suction roller 10. The cooling water whose temperature has been adjusted to a predetermined temperature is supplied to the water cooling tubes 13 by a water supply structure, not shown. When the manufacturing apparatus 1 is operated, the heat of the adsorption roller 10 is absorbed by the cooling water as a heat medium. Thereby, the adsorption roller 10 is cooled. The cooling water having absorbed the heat is discharged to a liquid discharge mechanism, not shown.
In addition, instead of the drying furnace 50 described below, a warm water circulation structure, a heating mechanism such as a heater, or the like may be provided inside the adsorption roller 10. In this case, the temperature of the outer circumferential surface of the adsorption roller 10 can be controlled by controlling the heating mechanism provided inside the adsorption roller 10 without providing a water cooling pipe inside the adsorption roller 10.
The porous base material supply and recovery unit 20 is a part that supplies the long-belt-shaped porous base material 91 to the suction roller 10 and recovers the used porous base material 91. The porous substrate 91 is a breathable substrate having a plurality of fine pores. The porous substrate 91 is preferably formed of a material that is less likely to generate dust. As shown in fig. 1, the porous substrate supply and recovery unit 20 includes a porous substrate supply roller 21, a plurality of porous substrate carrying-in rollers 22, a plurality of porous substrate carrying-out rollers 23, and a porous substrate recovery roller 24. The porous substrate supply roller 21, the porous substrate carry-in rollers 22, the porous substrate carry-out rollers 23, and the porous substrate recovery roller 24 are all disposed parallel to the adsorption roller 10.
The porous base material 91 before being supplied is wound around the porous base material supply roller 21. The porous base material supply roller 21 is rotated by power of a motor not shown. When the porous substrate supply roller 21 rotates, the porous substrate 91 is fed from the porous substrate supply roller 21. The porous base material 91 that is sent out is guided by the plurality of porous base material carry-in rollers 22 and is conveyed to the outer peripheral surface of the suction roller 10 along a predetermined carry-in path. Next, the porous base material 91 is sucked and held on the outer peripheral surface of the suction roller 10, and is conveyed in an arc shape by the rotation of the suction roller 10. In fig. 2, the suction roller 10 is shown spaced apart from the porous base material 91 held by the suction roller 10 for easy understanding.
The porous base material 91 is conveyed by 180 ° or more, preferably 270 ° or more, around the axial center of the suction roller 10. Then, the porous base material 91 is detached from the outer peripheral surface of the suction roller 10. The porous substrate 91 released from the suction roller 10 is conveyed to the porous substrate recovery roller 24 along a predetermined conveyance path while being guided by the porous substrate conveyance rollers 23. The porous base material recovery roller 24 is rotated by power of a motor not shown. Thus, the used porous base material 91 is wound around the porous base material collecting roller 24.
The electrolyte membrane supply unit 30 is a portion where the first support film 93 is peeled from the electrolyte membrane 92 while supplying the laminated base material 94 composed of two layers of the electrolyte membrane 92 and the first support film 93 to the periphery of the adsorption roller 10.
For example, a fluorine-based or hydrocarbon-based polymer electrolyte membrane can be used as the electrolyte membrane 92. Specific examples of the electrolyte membrane 92 include a polymer electrolyte membrane containing perfluorocarbon sulfonic acid (for example, Nafion (registered trademark) manufactured by DuPont, usa, Flemion (registered trademark) manufactured by asahi glass co. For example, the thickness of the electrolyte membrane 92 is set to 5 μm to 30 μm. The electrolyte membrane 92 expands due to moisture in the atmosphere, and contracts when the humidity decreases. That is, the electrolyte membrane 92 has a property of being easily deformed according to the humidity in the atmosphere.
The first support film 93 is a film for suppressing deformation of the electrolyte membrane 92. As a material of the first support film 93, a resin having a higher mechanical strength than the electrolyte membrane 92 and an excellent shape retaining function is used. Specific examples of the first support film 93 include Polyethylene naphthalate (PEN) and Polyethylene terephthalate (PET). For example, the first support film 93 has a film thickness of 25 μm to 100 μm.
As shown in fig. 1, the electrolyte membrane supply unit 30 includes a laminated substrate supply roller 31 (electrolyte membrane supply roller), a plurality of laminated substrate carry-in rollers 32, a peeling roller 33, a plurality of first support membrane carry-out rollers 34, and a first support membrane recovery roller 35. The laminated substrate supply roller 31, the plurality of laminated substrate carry-in rollers 32, the peeling roller 33, the plurality of first support film carry-out rollers 34, and the first support film recovery roller 35 are all arranged in parallel with the adsorption roller 10.
The laminate base material 94 before being supplied is wound around the laminate base material supply roller 31 with the first support film 93 inside. In the present embodiment, an electrode layer (hereinafter, referred to as "first electrode layer 9 a") is formed in advance on a surface (hereinafter, referred to as "first surface") of the electrolyte membrane 92 opposite to the first support film 93. The first electrode layer 9a is formed by intermittently applying an electrode material to the first surface of the electrolyte membrane 92 and drying the applied electrode material while directly conveying the laminated base material 94 composed of the two layers of the first support film 93 and the electrolyte membrane 92 in a roll-to-roll manner in a separate apparatus different from the manufacturing apparatus 1.
The laminated base material supply roller 31 is rotated by power of a motor not shown. When the laminated base material supply roller 31 rotates, the laminated base material 94 is sent out from the laminated base material supply roller 31. The fed laminated substrate 94 is conveyed to the peeling roller 33 along a predetermined carrying-in path while being guided by the plurality of laminated substrate carrying-in rollers 32.
The peeling roller 33 is a roller for peeling the first support film 93 from the electrolyte film 92. The peeling roller 33 has a cylindrical outer peripheral surface having a smaller diameter than the suction roller 10. At least the outer peripheral surface of the peeling roller 33 is formed of an elastic body. The peeling roller 33 is disposed adjacent to the suction roller 10 slightly downstream of the introduction position of the porous base material 91 into the suction roller 10 in the rotation direction of the suction roller 10. The peeling roller 33 is pressed toward the suction roller 10 by an air cylinder not shown.
As shown in fig. 2, the laminated substrate 94 carried in by the plurality of laminated substrate carrying-in rollers 32 is introduced between the suction roller 10 and the peeling roller 33. At this time, the first surface of the electrolyte membrane 92 and the first electrode layer 9a are both in contact with the surface of the porous base material 91 held by the suction roller 10, and the first support film 93 is in contact with the outer peripheral surface of the peeling roller 33. Further, the laminated substrate 94 is pressed toward the suction roller 10 by the pressure from the peeling roller 33. A negative pressure is generated on the surface of the porous base material 91 held by the suction roller 10 by the suction force from the suction roller 10. The electrolyte membrane 92 is adsorbed on the surface of the porous substrate 91 by the negative pressure. Next, the electrolyte membrane 92 is held on the suction roller 10 together with the porous base material 91, and is conveyed in an arc shape by the rotation of the suction roller 10. In fig. 2, the porous base material 91 held by the adsorption roller 10 is shown spaced apart from the electrolyte membrane 92 for easy understanding.
As described above, in the present embodiment, the porous base material 91 is interposed between the outer circumferential surface of the adsorption roller 10 and the electrolyte membrane 92. Therefore, the outer peripheral surface of the adsorption roller 10 does not directly contact the first electrode layer 9a formed on the first surface of the electrolyte membrane 92. Therefore, a part of the first electrode layer 9a can be prevented from adhering to the outer circumferential surface of the adsorption roller 10, or foreign matter can be prevented from being transferred from the outer circumferential surface of the adsorption roller 10 to the electrolyte membrane 92.
On the other hand, the first support film 93 passing between the suction roller 10 and the peeling roller 33 is separated from the suction roller 10 and conveyed to the plurality of first support film carrying-out rollers 34. Thereby, the first support film 93 is peeled off from the electrolyte membrane 92. As a result, the surface (hereinafter referred to as "second surface") of the electrolyte membrane 92 opposite to the first surface is exposed. The peeled first support film 93 is conveyed to the first support film collecting roller 35 along a predetermined conveyance path while being guided by the plurality of first support film conveyance rollers 34. The first support film recovery roller 35 is rotated by power of a motor not shown. Thereby, the first support film 93 is wound around the first support film recovery roller 35.
The coating section 40 is a mechanism for coating the electrode material on the surface of the electrolyte membrane 92 around the adsorption roller 10. As the electrode material, for example, a catalyst ink in which catalyst particles containing platinum (Pt) are dispersed in a solvent such as ethanol is used. As shown in fig. 1, the coating section 40 has a nozzle 41. The nozzle 41 is provided on the downstream side of the peeling roller 33 in the direction in which the electrolyte membrane 92 is conveyed by the adsorption roller 10. The nozzle 41 has an ejection port 411 facing the outer peripheral surface of the adsorption roller 10. The discharge port 411 is a slit-shaped opening extending in the horizontal direction along the outer peripheral surface of the adsorption roller 10.
The nozzle 41 is connected to an electrode material supply source, not shown. When the coating section is driven, the electrode material is supplied from the electrode material supply source to the nozzle 41 through the pipe. Next, the electrode material is discharged from the discharge port 411 of the nozzle 41 toward the second surface of the electrolyte membrane 92. Thereby, the electrode material is coated on the second face of the electrolyte membrane 92.
In the present embodiment, the electrode material is intermittently ejected from the ejection port 411 of the nozzle 41 by opening and closing a valve connected to the nozzle 41 at a constant cycle. Thereby, the electrode material is intermittently applied to the second surface of the electrolyte membrane 92 at a constant interval in the transport direction. However, the valve may be continuously opened, and the electrode material may be applied to the second surface of the electrolyte membrane 92 without interruption in the transport direction.
In addition, as the catalyst particles in the electrode material, a material that causes a fuel cell reaction in a positive electrode or a negative electrode of a polymer fuel cell is used. Specifically, particles such as platinum (Pt), platinum alloys, and platinum compounds can be used as the catalyst particles. Examples of the platinum alloy include an alloy of platinum and at least one metal selected from the group consisting of ruthenium (Ru), palladium (Pd), nickel (Ni), molybdenum (Mo), iridium (Ir), iron (Fe), and the like. In general, platinum is used for an electrode material for a negative electrode, and a platinum alloy is used for an electrode material for a positive electrode. The electrode material discharged from the nozzle 41 may be used as a positive electrode or a negative electrode. However, electrode materials having polarities opposite to each other are used as the electrode layers 9a and 9b formed on the front and back surfaces of the electrolyte membrane 92.
The nozzle 41 and the piping of the coating section 40 need to be periodically maintained by, for example, cleaning and disassembling. Therefore, the manufacturing apparatus 1 includes a maintenance space 80 for performing maintenance of the coating section 40. In the present embodiment, a maintenance space 80 is provided between the coating section 40 and the first support film recovery roller 35. When performing maintenance of the coating unit 40, the operator 89 stands on the step plate 801 provided in the maintenance space 80, and cleans and the like the components constituting the coating unit 40.
The drying furnace 50 is a part for drying the electrode material coated on the second surface of the electrolyte membrane 92. The drying furnace 50 of the present embodiment is disposed downstream of the coating section 40 in the direction in which the electrolyte membrane 92 is conveyed by the adsorption roller 10. The drying furnace 50 is provided in an arc shape along the outer peripheral surface of the suction roller 10. The drying furnace 50 blows heated gas (hot air) to the second surface of the electrolyte membrane 92 around the adsorption roller 10. Then, the electrode material applied to the second surface of the electrolyte membrane 92 is heated, and the solvent in the electrode material is vaporized. Thereby, the electrode material is dried, and an electrode layer (hereinafter referred to as "second electrode layer 9 b") is formed on the second surface of the electrolyte membrane 92. As a result, a membrane electrode assembly 95 including the electrolyte membrane 92, the first electrode layer 9a, and the second electrode layer 9b was obtained.
The assembly recovery unit 60 is a part for attaching the second support film 96 to the membrane electrode assembly 95 and recovering the membrane electrode assembly 95. As shown in fig. 1, the joined body collecting section 60 includes a second support film supply roller 61, a plurality of second support film carrying-in rollers 62, a laminating roller 63, a plurality of joined body carrying-out rollers 64, and joined body collecting rollers 65 (electrolyte film collecting rollers). The second support film supply roller 61, the plurality of second support film carrying-in rollers 62, the laminating roller 63, the plurality of joined body carrying-out rollers 64, and the joined body collecting roller 65 are arranged in parallel with the adsorption roller 10.
The second support film 96 before feeding is wound around the second support film feeding roller 61. The second support film supply roller 61 is rotated by power of a motor not shown. When the second support film supply roller 61 rotates, the second support film 96 is sent out from the second support film supply roller 61. The second support film 96 that is sent out is conveyed to the laminating roller 63 along a predetermined carrying-in path while being guided by the plurality of second support film carrying-in rollers 62.
The material of the second support film 96 is a resin having higher mechanical strength than the electrolyte membrane 92 and excellent shape retention function. Specific examples of the second support film 96 include Polyethylene naphthalate (PEN) and Polyethylene terephthalate (PET). For example, the film thickness of the second support film 96 is set to 25 μm to 100 μm. The second support film 96 may be the same as the first support film 93. The first support film 93 wound around the first support film recovery roller 35 may be fed from the second support film supply roller 61 as the second support film 96.
The laminating roller 63 is a roller for attaching the second support film 96 to the membrane electrode assembly 95. As a material of the laminating roller 63, for example, rubber having high heat resistance is used. The laminating roller 63 has a cylindrical outer peripheral surface having a smaller diameter than the suction roller 10. The laminating roller 63 is disposed adjacent to the suction roller 10 on the downstream side of the drying furnace 50 and on the upstream side of the position where the porous base material 91 is separated from the suction roller 10 in the rotation direction of the suction roller 10. The laminating roller 63 is pressed toward the suction roller 10 by an air cylinder not shown.
As shown in fig. 2, a heater 631 that generates heat by energization is provided inside the laminating roller 63. As the heater 631, for example, a Sheath heater (Sheath heater) is used. When the heater is energized, the temperature of the outer peripheral surface of the laminating roller 63 is adjusted to a predetermined temperature higher than the ambient temperature by the heat generated by the heater 631. Further, the temperature of the outer peripheral surface of the laminating roller 63 is measured using a temperature sensor such as a radiation thermometer, and based on the measurement result, the sending of the heater 631 can be controlled so that the outer peripheral surface of the laminating roller 63 reaches a predetermined temperature.
As shown in fig. 2, the second support film 96 carried in by the plurality of second support film carrying-in rollers 62 is introduced between the membrane electrode assembly 95 and the laminating roller 63, which are conveyed around the adsorption roller 10. At this time, the second support film 96 is pressed against the membrane electrode assembly 95 by the pressure from the laminating roller 63, and is heated by the heat of the laminating roller 63. As a result, the second support film 96 is attached to the second surface of the electrolyte membrane 92. The second electrode layer 9b formed on the second face of the electrolyte membrane 92 is sandwiched between the electrolyte membrane 92 and the second support film 96.
The membrane-electrode assembly 95 with the second support film 96 passing between the suction roller 10 and the laminating roller 63 is conveyed in a direction away from the suction roller 10. Thereby, the membrane electrode assembly 95 is peeled from the porous substrate 91.
In the present embodiment, a pressing roller 632 is disposed near the laminating roller 63. The pressing roller 632 is disposed adjacent to the laminating roller 63 on the downstream side in the transport direction of the film electrode assembly 95 with respect to the gap between the suction roller 10 and the laminating roller 63. The pressing roller 632 is pressed toward the laminating roller 63 by an air cylinder not shown. Next, the membrane electrode assembly 95 with the second support film 96 detached from the porous base material 91 passes between the laminating roller 63 and the pressing roller 632. Thereby, close adhesion between second support film 96 and the second face of electrolyte membrane 92 is improved.
Then, the membrane electrode assembly 95 with the second support film 96 is conveyed to the assembly collecting roller 65 along a predetermined conveyance path while being guided by the assembly conveyance rollers 64. The joined body collecting roller 65 is rotated by power of a motor not shown. Thereby, the membrane electrode assembly 95 with the second support film 96 is wound around the assembly recovery roller 65 with the second support film 96 on the outside.
As described above, in the manufacturing apparatus 1 of the present embodiment, the steps of feeding the laminated base material 94 from the laminated base material supply roll 31, peeling the first support film 93 from the electrolyte membrane 92, applying the electrode material to the electrolyte membrane 92, drying in the drying furnace, attaching the second support film 96 to the electrolyte membrane 92, and winding the membrane electrode assembly 95 around the assembly collection roll 65 are sequentially performed. Thus, a membrane electrode assembly 95 used for an electrode of a polymer electrolyte fuel cell is produced. The electrolyte membrane 92 is always held at the first support film 93, the adsorption roller 10, or the second support film 96. This suppresses deformation such as expansion and contraction of the electrolyte membrane 92 in the manufacturing apparatus 1.
The control unit 70 is a unit for controlling the operation of each part in the manufacturing apparatus 1. Fig. 3 is a block diagram showing the connection of the control unit 70 to each part in the manufacturing apparatus 1. As conceptually shown in fig. 3, the control unit 70 is constituted by a computer having an arithmetic processing unit 71 such as a CPU, a memory 72 such as a RAM, and a storage unit 73 such as a hard disk drive. A computer program P for executing a process of manufacturing the membrane electrode assembly is installed in the storage unit 73.
As shown in fig. 3, the control section 70 is communicably connected to the rotation driving section 11 of the suction roller 10, the suction mechanism of the suction roller 10, the motor of the porous base material supply roller 21, the motor of the porous base material recovery roller 24, the motor of the laminated base material supply roller 31, the cylinder of the peeling roller 33, the motor of the first support film recovery roller 35, the coating section 40, the drying oven 50, the motor of the second support film supply roller 61, the cylinder of the laminating roller 63, the heater 631 of the laminating roller 63, the cylinder of the pressing roller 632, and the motor of the joint body recovery roller 65.
The control unit 70 temporarily reads the computer program P and data stored in the storage unit 73 into the memory 72, and controls the operations of the respective units by causing the arithmetic processing unit 71 to perform arithmetic processing based on the computer program P. Thereby, the membrane electrode assembly is manufactured in the manufacturing apparatus.
< 2. layout of multiple rollers and maintenance spaces >
Next, in the manufacturing apparatus 1, the layout of the plurality of rollers and the maintenance space will be described. Fig. 4 is a diagram conceptually showing the layout of the manufacturing apparatus 1.
As shown in fig. 4, in the manufacturing apparatus 1, the laminated substrate supply roller 31, the first support film recovery roller 35, and the maintenance space 80 are disposed in a space (hereinafter, referred to as an "upstream space 81") on the side of the suction roller 10 in the horizontal direction (the horizontal direction perpendicular to the axial center of the suction roller 10). The porous base material supply roller 21, the porous base material recovery roller 24, the second support film supply roller 61, and the joined body recovery roller 65 are disposed in a space on the other side in the horizontal direction from the adsorption roller 10 (hereinafter, referred to as a "downstream side space 82").
That is, in the manufacturing apparatus 1, the porous substrate supply roller 21 and the porous substrate recovery roller 24 are collectively disposed in the downstream side space 82 which is a space on the suction roller 10 side. This ensures a wide maintenance space 80 in the upstream space 81 on the opposite side of the suction roller 10. In addition, compared to the case where the porous substrate supply roller 21 and the porous substrate recovery roller 24 are disposed in one space side of the maintenance space 80, the dimensions of the manufacturing apparatus 1 in the height direction can be further suppressed by disposing the porous substrate supply roller 21 and the porous substrate recovery roller 24 in the space opposite to each other and the maintenance space 80.
In particular, in the manufacturing apparatus 1, the maintenance space 80 is disposed in the upstream space 81 in which the laminated base material supply roller 31 is provided. The porous base material supply roller 21 and the porous base material recovery roller 24 are disposed in the downstream space 82 where the joined body recovery roller 65 is disposed. Thus, the porous substrate supply roller 21 and the porous substrate recovery roller 24 serving as the driving portions are separated from the electrolyte membrane 92 before the coating process. Therefore, even if dust is generated in the porous substrate supply roller 21 or the porous substrate collection roller 24, the adhesion of the dust to the electrolyte membrane 92 before the coating process can be suppressed.
In the manufacturing apparatus 1, the maintenance space 80 is located between the laminated base material supply roller 31 and the first support/recovery roller 35, and the suction roller 10. The laminated substrate 94 fed out by the laminated substrate supply roller 31 and the peeled first support film 93 both pass through the maintenance space 80 below the step plate 801. In this way, the dimension of the manufacturing apparatus 1 in the height direction can be suppressed more than in the case where the laminated base 94 and the first support film 93 pass through the maintenance space 80 from above.
As described above, in the manufacturing apparatus 1, the first electrode layer 9a is formed on the first surface of the electrolyte membrane 92 fed out from the laminated substrate supply roller 31. Therefore, as shown in fig. 1, among the plurality of laminated substrate carrying-in rollers 32, the number of laminated substrate carrying-in rollers 32 disposed on the first surface side of the electrolyte membrane 92 is smaller than the number of laminated substrate carrying-in rollers 32 disposed on the second surface side of the electrolyte membrane 92. This reduces the number of times the laminated substrate carrying-in roller 32 contacts the first electrode layer 9a already formed on the first surface of the electrolyte membrane 92. As a result, damage of the first electrode layer 9a is suppressed, and adhesion of dust to the first electrode layer 9a is suppressed.
As shown in fig. 1, in the manufacturing apparatus 1, the plurality of joined body carry-out rollers 64 are all disposed on the second surface side of the electrolyte membrane 92. That is, the plurality of joint body carry-out rollers 64 are all in contact with the second support film 96. This suppresses the damage of the first surface of the electrolyte membrane 92 not protected by the second support film 96 and the first electrode layer 9a formed on the first surface by the joined body carry-out roller 64, and also suppresses the adhesion of dust to the first electrode layer 9 a.
As shown in fig. 4, in the manufacturing apparatus 1, the laminated base material supply roller 31 and the first support film recovery roller 35 are disposed adjacent to each other at the same height h 1. In this way, the dimension of the manufacturing apparatus 1 in the height direction can be further suppressed as compared with the case where the laminated base material supply roller 31 and the first support film recovery roller 35 are arranged at different heights. In addition, the same conveying device can be used for the replacement operation of the laminated substrate 94 in the laminated substrate supply roller 31 and the replacement operation of the first support film 93 in the first support film recovery roller 35. Therefore, the replacement operation described above is easily performed.
In the manufacturing apparatus 1, the second support film supply roller 61 and the joined body collecting roller 65 are disposed adjacent to each other at the same height h 1. Therefore, the dimension of the manufacturing apparatus 1 in the height direction can be further suppressed as compared with the case where the second support film supply roller 61 and the joined body collection roller 65 are arranged at different heights. In addition, the same transport device can be used for the replacement operation of the second support film 96 in the second support film supply roller 61 and the replacement operation of the membrane electrode assembly 95 in the assembly recovery roller 65. Therefore, the replacement operation described above is easily performed.
In the manufacturing apparatus 1, the porous substrate supply roller 21 and the porous substrate recovery roller 24 are disposed adjacent to each other at the same height h 2. Therefore, the dimension of the manufacturing apparatus 1 in the height direction can be further suppressed as compared with the case where the porous substrate supply roller 21 and the porous substrate recovery roller 24 are disposed at different heights. The replacement operation of the porous base material 91 in the porous base material supply roller 21 and the replacement operation of the porous base material 91 in the multi-control base material recovery roller 24 can use the same transport device. Therefore, the replacement operation described above is easily performed.
Further, in this manufacturing apparatus, the laminated base material supply roller 31 and the first support film recovery roller 35 are disposed at the same height as the second support film supply roller 61 and the joined body recovery roller 65. In this way, the dimension of the manufacturing apparatus 1 in the height direction can be suppressed more than in the case where the four rollers are arranged at different heights from each other. In addition, the replacement operation of the substrate in the four rollers can use the same transport device. Therefore, the replacement operation described above is easily performed.
In the manufacturing apparatus 1, the porous base material supply roller 21, the porous base material recovery roller 24, the laminated base material supply roller 31, the first support film recovery roller 35, the second support film supply roller 61, and the joint body recovery roller 65 are all disposed at positions lower than the suction roller 10. In this way, even if dust is generated from the porous base material supply roller 21, the porous base material recovery roller 24, the laminated base material supply roller 31, the first support film recovery roller 35, the second support film supply roller 61, and the joined body recovery roller 65, which are the driving portions, the dust is less likely to scatter around the adsorption roller 10. Therefore, the occurrence of defects in the coating process of the electrode material can be suppressed.
Further, in the manufacturing apparatus 1, as shown in fig. 1, the plurality of porous substrate carrying-in rollers 22, the plurality of porous substrate carrying-out rollers 23, the plurality of laminated substrate carrying-in rollers 32, the plurality of first support film carrying-out rollers 34, the plurality of second support film carrying-in rollers 62, and the plurality of joined body carrying-out rollers 64 are all disposed at positions lower than the adsorption rollers 10. In this way, even if the roller serving as the driving portion generates dust, the dust is less likely to scatter around the suction roller 10. Therefore, the occurrence of defects in the coating process of the electrode material can be further suppressed.
< 3. modification example >
While one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.
Fig. 5 is a diagram conceptually showing a layout of a manufacturing apparatus 1a according to a modification. In the example of fig. 5, the porous substrate supply roller 21, the porous substrate recovery roller 24, the laminated substrate supply roller 31, and the first support film recovery roller 35 are disposed in the upstream space 81. The second support film supply roller 61, the joined body collection roller 65, and the maintenance space 80 are disposed in the downstream side space 82.
In the example of fig. 5, the porous substrate supply roller 21 and the porous substrate recovery roller 24 are collectively disposed in an upstream space 81 which is a space on the suction roller 10 side. This ensures the maintenance space 80 in the downstream space 82 on the opposite side of the suction roller 10. In addition, by disposing the porous substrate supply roller 21 and the porous substrate recovery roller 24 in the space on the opposite side to the maintenance space 80, the dimension of the manufacturing apparatus 1a in the height direction can be further suppressed, as compared with the case where the porous substrate supply roller 21 and the porous substrate recovery roller 24 are disposed in the space on one side and the maintenance space 80 are both disposed in the space on one side.
In the above embodiment, the case where the second electrode layer 9b is formed on the other surface of the electrolyte membrane 92 on which the first electrode layer 9a is formed in advance on one surface thereof is described. However, the manufacturing apparatus of the present invention may form electrode layers on an electrolyte membrane having no electrode layer formed on both the front and back surfaces.
In the above embodiment, a case where the laminated base material 94 composed of two layers of the electrolyte membrane 92 and the first support film 93 is supplied from the laminated base material supply roller 31 as an electrolyte membrane supply roller will be described. However, the electrolyte membrane supply roller of the present invention may also feed out the electrolyte membrane 92 to which the first support film 93 is not attached.
In the above embodiment, a case where the electrolyte membrane 92 with the second support film 96 is wound around the joined body collecting roll 65 as the electrolyte membrane collecting roll will be described. However, the electrolyte membrane recovery roll of the present invention may also wind the electrolyte membrane 92 to which the second support film 96 is not attached.
The structure of the fine part of the manufacturing apparatus may be different from those shown in the drawings of the present application. In addition, the respective elements appearing in the above embodiment and the modified examples may be appropriately combined within a range in which no contradiction occurs.

Claims (10)

1. A membrane-electrode assembly manufacturing apparatus for forming an electrode layer on a surface of an electrolyte membrane while conveying a long strip-shaped electrolyte membrane, the membrane-electrode assembly manufacturing apparatus comprising:
an adsorption roller which rotates while generating a negative pressure on an outer peripheral surface;
a porous base material supply roller configured to supply a long band-shaped porous base material to an outer peripheral surface of the suction roller;
a porous substrate recovery roller around which the porous substrate detached from the outer peripheral surface of the suction roller is wound;
an electrolyte film supply roller that feeds the electrolyte film to the surface of the porous base material held on the outer peripheral surface of the adsorption roller;
an electrolyte membrane collecting roll for winding the electrolyte membrane detached from the surface of the porous substrate;
a coating section for coating the surface of the electrolyte membrane with an electrode material around the adsorption roller; and
a maintenance space provided with a pedal for an operator to clean the components constituting the coating section,
the porous base material supply roller, the porous base material recovery roller, and the maintenance space are disposed on the opposite sides in the horizontal direction with the suction roller interposed therebetween,
the electrolyte membrane supply roller and the maintenance space are arranged on one side of the adsorption roller in the horizontal direction,
the porous substrate supply roller, the porous substrate recovery roller, and the electrolyte membrane recovery roller are disposed on the other side of the adsorption roller in the horizontal direction.
2. The manufacturing apparatus according to claim 1,
the electrolyte film supply roller feeds out an electrolyte film having an electrode layer formed on one surface thereof,
the manufacturing apparatus further includes a plurality of carry-in rollers for guiding the electrolyte membrane between the electrolyte membrane supply roller and the adsorption roller,
the number of carry-in rollers disposed on the one surface side of the electrolyte membrane is smaller than the number of carry-in rollers disposed on the other surface side of the electrolyte membrane.
3. The manufacturing apparatus according to claim 1,
the maintenance space is located between the electrolyte membrane supply roller and the adsorption roller,
the electrolyte membrane fed out from the electrolyte membrane supply roller passes below the maintenance space.
4. The manufacturing apparatus according to claim 1,
the porous substrate supply roller and the porous substrate recovery roller are disposed adjacent to each other at the same height.
5. The manufacturing apparatus according to claim 1,
the electrolyte membrane supply roller feeds out a laminated base material having at least two layers of the electrolyte membrane and a first support film,
the manufacturing apparatus further includes a first support film recovery roller that separates the first support film from the electrolyte film before the first support film is wound around the adsorption roller,
the electrolyte membrane supply roller and the first support film recovery roller are disposed on the same side of the adsorption roller in the horizontal direction.
6. The manufacturing apparatus according to claim 5,
the electrolyte membrane supply roller and the first support film recovery roller are disposed adjacent to each other at the same height.
7. The manufacturing apparatus according to claim 1, further comprising:
a laminating roller that attaches a second support film to the surface of the electrolyte membrane coated with the electrode material; and
a second support film supply roller that feeds out the second support film to the laminating roller,
the electrolyte membrane recovery roller and the second support film supply roller are disposed on the same side of the adsorption roller in the horizontal direction.
8. The manufacturing apparatus according to claim 7,
the electrolyte membrane recovery roller and the second support film supply roller are disposed adjacent to each other at the same height.
9. The manufacturing apparatus according to claim 1,
the electrolyte membrane supply roller and the electrolyte membrane recovery roller are disposed at the same height.
10. The manufacturing apparatus according to claim 1,
the porous substrate supply roller, the porous substrate recovery roller, the electrolyte membrane supply roller, and the electrolyte membrane recovery roller are all disposed at a position lower than the adsorption roller.
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CA2958628A1 (en) 2017-08-22
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CA2958628C (en) 2019-01-22

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